Ya you can't trust what they say, no matter what head you choose it should always be tested before hunting with it.. Some will be way off and some on the money. If you have a properly tuned bow it will be close with almost anything.. Of course an expandable will be more forgiving than a fixed blade, especially out of a fast bow.. But I will second that the most accurate and probably sharpest broadheads I've ever shot is the G5 Striker.. My brothers bow shoots several broadheads way off from field points but he tried some of my strikers and they were dead on, not that you will have the same result but point is you need to shoot them before you hunt...